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Re: restore balloons db size

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Marc Fromm <Marc(dot)Fromm(at)wwu(dot)edu>
Cc: "pgsql-admin(at)postgresql(dot)org" <pgsql-admin(at)postgresql(dot)org>
Subject: Re: restore balloons db size
Date: 2008-07-31 15:48:32
Message-ID: 8733.1217519312@sss.pgh.pa.us (view raw or flat)
Thread:
Lists: pgsql-admin
Marc Fromm <Marc(dot)Fromm(at)wwu(dot)edu> writes:
> Does anyone have some insight on why the db size is expanding with each restore?
> If I restore all the postgresql databases from pg_dumpall and use the -c to drop databases before restoring them the size of the base directory dramatically increases with each restore (193MB to 355MB to 624MB). If I run vacuumdb, it only drops by a few MB.

Seems a little odd.  Please look closer and find out where the bloat is,
exactly.  If you're not clear on what's what, see
http://www.postgresql.org/docs/8.3/static/storage-file-layout.html

			regards, tom lane

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